A reservoir is filled with 1 billion cubic feet of polluted water that initially contains 0.6% pollution. Every day 400 million cubic feet of clean water enters the reservoir and the well-mixed solution flows out at the same rate. When, in days, will the pollutant concentration in the reservoir reach 0.1%

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.

stops on an even number.